While it may not seem evident in day to day business, there is quite a bit of symmetry between product management and sales teams. In fact, both teams want the same thing: products that customers love and want to buy. So why then, is there often friction between product management...

Subselects can be used in many ways: filtering, retrieving specific data, and creating custom joins. Writing effective SQL using subselects, though, can be frustrating. While SQL is ubiquitous in software engineering and is a valuable skill for testing, data analysis and reporting, nowadays a lot of SQL is abstracted...